Continuity mistake: After Jack places the pig's blood on Roger's cheek, he then places it on his own. Look at the amount of blood on Jack's index finger. It goes from a little to a lot.
Jack Merridew: Whats this dumbshit I hear about a monster? We're gonna have to send you back to kindergarten.
Larry: I'm serious.
Jack Merridew: Ok what kind of monster? Did it have fur and poison fangs, or long slimy tentacles?
Larry: It growled and it came out of me and it's mouth, it was wet.
Luke: Maybe it was a bear.
Roger: Sounds more like a reptile.
Jack Merridew: Sounds more like bullshit.
Piggy: We did everything just the way grownups would have. Why didn't it work? Things would be much better here if it wasn't for him. I wish he was dead.
Ralph: No, you don't.
Piggy: I do! We could just give up and join his tribe. Then we'd at least be with the others.
Ralph: No, Piggy.
Piggy: Ralph... I can't see.
Ralph: I know.